Is this consistent with ankylosing spondilotis?
Not specifically. People with Ankylosing Spondylitis can experience facet arthropathy, ligamentum flavum hypertrophy, and spondylosis. However these issues are not exclusive to AS patients and are not considered in the diagnosis of AS. Have you been tested for HLA-b27? Have you had x-rays or MRIs of your Sacroiliac Joints or have you been diagnosed with Sacroiliitis?
Facet Arthropathy: degenerative changes to the facet joints and the disintegration of cartilage on those joints
Ligamentum Flavum Hypertrophy: degenerative condition of the spine where the tendons holding one vertebra to another thicken, decreasing the amount of room available for the spinal cord and the nerves. It may be associated with inflammation, degeneration, or osteoporosis.
Spondylosis: a general term for age-related wear and tear affecting the spinal disks